Home / 78,455.52-108,194.40-50,112

Finding the Fourth Proportional to 78,455.52, 108,194.40 and 50,112

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Solution

The fourth proportional to 78,455.52, 108,194.40 and 50,112 is: 69,107.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,455.52 : 108,194.40 = 50,112 : x
  2. Step 2: Convert to fraction form
    78,455.52/108,194.40 = 50,112/x
  3. Step 3: Cross multiply
    78,455.52x = 108,194.40 × 50,112
  4. Step 4: Simplify right side
    78,455.52x = 5,421,837,772.80
  5. Step 5: Solve for x
    x = 5,421,837,772.80/78,455.52
  6. Step 6: Final answer
    x = 69,107.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.